How do you clean tarnished bronze?

Lemon juice and salt paste removes tarnish gently. For heavy tarnish, repeat the application.

Can you use vinegar on bronze?

Yes, but use it briefly and rinse thoroughly. Prolonged contact damages the bronze and removes patina.

Apply a thin coat of beeswax or microcrystalline wax to seal the surface and slow tarnishing.

No. Bronze is copper and tin. Brass is copper and zinc. Cleaning methods differ slightly -- bronze is more delicate.

Jewelry

Your bronze will sparkle like the day you got them with the right cleaning technique. Here's the safe way that jewelers recommend.

1
Dust the bronze first
Wipe the bronze item with a soft dry cloth to remove loose dust and debris before applying any cleaner.
2
Make a cleaning paste
Mix 1 tablespoon of salt, 1 tablespoon of baking soda, and the juice of half a lemon into a thick paste.
3
Apply the paste
Rub the paste onto the bronze with a soft cloth or toothbrush. Work in small sections, scrubbing gently.
4
Let sit briefly
Allow the paste to sit for 1-2 minutes -- not longer, as the acid can affect the patina if you want to preserve it.
5
Rinse and dry
Rinse thoroughly with warm water to remove all paste. Dry immediately and completely with a soft cloth.

TIPDecide if you want to preserve the patina (the green oxidation) -- it is considered desirable on antique bronze.
TIPAfter cleaning, apply a thin coat of beeswax to protect bronze from future tarnishing.
TIPTest cleaning solutions on a hidden area first, especially on antique or valuable bronze pieces.

XUsing harsh chemical cleaners or ammonia, which can permanently damage bronze and remove valuable patina.
XLeaving acidic cleaners on too long, which etches the bronze surface and removes the natural patina.
XCleaning antique bronze without research, which can destroy its value -- consult an antiques expert first.

Patina is often desirable on antique bronze, increasing value and character. Remove only if you prefer the polished look.